one of those perfect storms....track with no lights, with a noise curfew, chasing dusk, and then a massive Funny Car oildown and a rushed clean-up job.  Really noone to blame as far I could see, other than NHRA leaving a little more time wiggle room in the schedule for stuff like this.  I just feel bad for the fans paying good money and getting screwed out of a nitro session.  If the NHRA had some business ethics, they would do something for them.